Abstract:Objective To investigate the effectiveness of SonoScape endoscope combined with Kyoto gastritis classification in diagnosis of Helicobacter pylori (Hp) in stomach.Methods Use the SonoScape endoscope to observe the gastric mucosa. The gastric mucosa was scored using Kyoto classification of gastritis, and the presence of Hp infection was judged. Combined with rapid urease Hp detection to comprehensively evaluate the diagnostic efficiency of SonoScape endoscope. Combined with rapid urease and gastroscope observation of gastric mucosal manifestations, multivariate analysis was performed.Results Compared with rapid urease, the diagnostic efficiency of SonoScape endoscope combined with Kyoto gastritis classification for the diagnosis of Hp was better [AUC = 0.913, 95%CI: 0.884 ~ 0.943, the sensitivity was 92.20%, the specificity was 90.50%, and the Youden index (YI) was 0.827]. The diagnosis of diffuse redness observed by SonoScape endoscope SFI mode was better than that of rapid urease (AUC = 0.893, 95%CI: 0.859 ~ 0.927, the sensitivity was 86.80%, the specificity was 91.30%, the YI was 0.781). Among the 55 cases of gastric intestinal metaplasia of gastric mucosa diagnosed under SonoScape endoscope, 46 cases were positive for gastric intestinal metaplasia reported by pathology, and the positive coincidence rate was 83.64%. Univariate analysis showed that age, patient type, examination type, number of color pictures, atrophy, gastric intestinal metaplasia, fold enlargement, chicken skin-like mucosa, diffuse redness, and the Kyoto classification score of gastritis were statistically different in the rapid urease test significance (P < 0.05), which were the influencing factor of Hp infection. In multivariate Logistic regression analysis, atrophy (OR^ = 19.725, 95%CI: 7.205 ~ 54.004), gastric intestinal metaplasia (OR^ = 11.103, 95%CI: 1.378~89.452), chicken skin-like mucosa (OR^ = 89.534, 95%CI: 9.124 ~ 870.055), diffuse redness (OR^ = 61.793, 95%CI: 23.278 ~ 160.920), Kyoto classification score of gastritis with 2 or above (OR^ = 1.123, 95%CI: 1.025 ~ 1.610) were independent factors for the positive detection of Hp by rapid urease combined SonoScape endoscope. The efficiency of Hp positive diagnosis was ranked as follows: chicken skin-like mucosa > diffuse redness > atrophy > gastric intestinal metaplasia > Kyoto classification score of gastritis with 2 and above.Conclusion SonoScape endoscope combined with Kyoto gastritis classification, compared with rapid urease detection, has a good diagnostic performance in the diagnosis of Hp in the upper gastrointestinal tract. The SFI mode has certain advantages in the observation of diffuse redness, the VIST mode has a greater advantage in judging red gastric intestinal metaplasia. The multivariate analysis shows that the observation indicators and Hp diagnosis results under SonoScape endoscope are basically consistent with the Kyoto gastritis classification.